Rotor experiment device

Abstract

The utility model provides a rotor experiment device, and relates to the field of aero-engine experiment and testing, the rotor experiment device comprises a support, a rotor, a bearing and a casing, the bearing rotor is rotatably connected with the bearing; the casing is connected to the support and is provided with an accommodating cavity and a first avoiding hole, the rotor is partially accommodated in the accommodating cavity, and the accommodating cavity is communicated with the outside through the first avoiding hole; the first sensor is connected to the support and located in the radial direction of the rotor. The first sensor can detect the radial displacement of the rotor through the first avoiding hole. The rotor experiment device provided by the embodiment of the utility model can improve the accuracy of a test result.

Description

Technical Field

[0001] This utility model relates to the field of aero-engine experimentation and testing, specifically to a rotor experimental device. Background Technology

[0002] Due to the complexity of the structure and actual operating environment of aero engines, existing technologies involve creating specialized aero engine experimental devices to simulate and analyze the structural system dynamic characteristics of the corresponding aero engine under a pre-set experimental environment.

[0003] To further simulate the real-world conditions of aero-engines, existing technologies have proposed experimental setups comprising a support, rotor, bearing, and casing. In these setups, the rotor, bearing, and casing serve as the entire experimental object, while the support is used to secure the entire system. By investigating the structural system dynamics of the rotor, bearing, and casing, it is possible to further understand the distribution of deformation energy in the load-bearing structure and the dynamic load transfer patterns of aero-engines under complex flight conditions.

[0004] If the sensor used to measure rotor displacement in the above-mentioned experimental device is directly mounted on the casing or support, the mass of the sensor itself will also affect the vibration characteristics of the support and casing during the experiment, thus affecting the test results of the experimental device and making it difficult to obtain accurate data. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a rotor testing device that can improve the accuracy of test results.

[0006] The rotor experimental apparatus according to a first aspect embodiment of the present invention includes:

[0007] support;

[0008] Rotor;

[0009] The rotor is rotatably connected to the support.

[0010] The casing is connected to the support and has a receiving cavity and a first clearance hole, the rotor portion is received in the receiving cavity, and the receiving cavity communicates with the outside through the first clearance hole;

[0011] A first sensor is connected to the bracket and located radially to the rotor; the first sensor is capable of detecting the radial displacement of the rotor through the first clearance hole.

[0012] The rotor experimental apparatus according to the embodiments of this utility model has at least the following beneficial effects:

[0013] The rotor and the casing are connected to each other by a support. During the experiment, researchers can refer to the relative motion of the rotor, support and casing as a whole with respect to the support to understand the dynamic characteristics of the overall structural system of the rotor, support and casing.

[0014] By setting a first clearance hole on the casing, the first sensor connected to the bracket can detect the radial displacement of the rotor relative to the bracket during the experiment through the first clearance hole, thereby avoiding the impact of the mass of the first sensor on the dynamic characteristics of the structural system of the rotor, support and casing, and improving the accuracy of the test results.

[0015] According to some embodiments of the present invention, the bracket includes a connecting shaft, which passes through the first clearance hole into the receiving cavity, and the first sensor is disposed on one side of the connecting shaft that is received in the receiving cavity.

[0016] According to some embodiments of the present invention, the bracket further includes a first frame and a fastening assembly, the connecting shaft being connected to the first frame via the fastening assembly; the fastening assembly has a locked state and an adjustable state; in the locked state, the fastening assembly fixes the relative position of the connecting shaft and the rotor; in the adjustable state, the fastening assembly is movable relative to the first frame, so that the connecting shaft can move radially relative to the rotor.

[0017] According to some embodiments of the present invention, the connecting shaft extends radially along the rotor and is movably connected to the first frame in the radial direction of the rotor; the fastening assembly includes a first fastener and a second fastener, which are respectively disposed on different sides of the first frame in the radial direction of the rotor and are both threadedly connected to the connecting shaft.

[0018] According to some embodiments of the present invention, the connecting shaft is connected to the first frame and is rotatable relative to the first frame to move radially relative to the rotor; the fastening assembly includes a third fastener, which is connected to the first frame and located radially to the connecting shaft, and the third fastener is able to approach the connecting shaft to restrict the radial movement of the connecting shaft relative to the rotor.

[0019] According to some embodiments of the present invention, the fastening assembly is disposed on the side of the housing away from the receiving cavity.

[0020] According to some embodiments of the present invention, the connecting shaft has a transmission channel that extends through the connecting shaft along its extension direction and is used to house wires; the first sensor is provided on the side of the transmission channel near the rotor along the extension direction of the connecting shaft.

[0021] According to some embodiments of the present invention, the casing further has a second clearance hole, which connects the receiving cavity to the outside; the rotor experimental device further includes a second sensor, which is connected to the bracket and located in the radial direction of the rotor, and can also detect the radial displacement of the rotor through the second clearance hole; the rotor experimental device has a projection plane perpendicular to the axial direction of the rotor, the line connecting the first sensor and the axis of the rotor has a first projection on the projection plane, the line connecting the second sensor and the axis of the rotor has a second projection on the projection plane, and the first projection and the second projection intersect.

[0022] According to some embodiments of the present invention, the casing also has a third clearance hole, which connects the receiving cavity and the outside; the rotor experimental device further includes a third sensor, which is connected to the bracket and located in the radial direction of the rotor, and can also detect the radial displacement of the rotor through the third clearance hole; the arrangement direction of the first sensor and the third sensor is parallel to the axial direction of the rotor.

[0023] According to some embodiments of the present invention, the support includes a load-bearing frame, a bearing seat, and a plurality of load-bearing spokes. The rotor is rotatably connected to the bearing seat, and the plurality of load-bearing spokes are detachably connected to the bearing seat and distributed along the circumference of the bearing seat. The side of the plurality of load-bearing spokes away from the bearing seat is detachably connected to the load-bearing frame.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0026] Figure 1 This is a schematic diagram of the overall rotor experimental apparatus according to some embodiments of the first aspect of this utility model;

[0027] Figure 2 for Figure 1 A schematic diagram of the central rotor experimental setup after removing some components;

[0028] Figure 3 for Figure 1 Overall schematic diagram of the central rotor;

[0029] Figure 4 for Figure 1 Schematic diagram showing the connection between the rotor, casing, and support;

[0030] Figure 5 for Figure 2 A magnified view of a section at point A in the middle;

[0031] Figure 6 for Figure 1 A schematic diagram showing the location of the position sensor.

[0032] Figure 7 for Figure 5 A magnified view of a section at point B in the middle;

[0033] Figure 8 for Figure 5 A magnified view of a section at point C;

[0034] Figure 9 This is a schematic diagram of the installation of the fastening components according to some embodiments of the second aspect of this utility model;

[0035] Figure 10 A schematic diagram illustrating the position setting of the position sensor according to some embodiments of the third aspect of this utility model;

[0036] Figure 11 for Figure 1 A front view of the support of the rotor experimental apparatus;

[0037] Figure 12 This is a schematic diagram of the rotor experimental apparatus according to some embodiments of the fourth aspect of this utility model.

[0038] Figure label:

[0039] 100 bracket, 110 connecting shaft, 111 transmission channel, 120 first frame, 130 fastening assembly, 131 first fastener, 132 second fastener, 133 third fastener, 134 fourth fastener;

[0040] Rotor 200, shaft 210, first mounting section 211, second mounting section 212, third mounting section 213, compressor disk assembly 230, turbine disk 240;

[0041] Support 300, load-bearing frame 310, bearing seat 320, load-bearing spoke 330;

[0042] The casing 400, the receiving cavity 410, the first clearance hole 420, the second clearance hole 430, and the third clearance hole 440;

[0043] First sensor 500;

[0044] Second sensor 600;

[0045] Third sensor 700;

[0046] Oil pipeline 800. Detailed Implementation

[0047] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0048] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0049] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0050] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0051] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] Please refer to Figures 1 to 12 As shown, this utility model proposes a rotor experimental device, which includes a bracket 100, a rotor 200, a support 300, a casing 400, and a first sensor 500.

[0053] In this invention, the rotor 200 is rotatably connected to the support 300, and the casing 400 is also connected to the support 300. During the experiment, the vibration generated by the rotor 200 is transmitted to the support 300 and the casing 400, and the mass of the support 300 and the casing 400 themselves also affects the vibration of the rotor 200. Researchers can use the bracket 100 as a reference to perform dynamic analysis on the entire assembly consisting of the rotor 200, the support 300, and the casing 400.

[0054] In existing technologies, aero-engines also include rotors, supports, and casings. Therefore, performing dynamic analysis on the entire assembly of the rotor 200, support 300, and casing 400 is beneficial for researchers to understand the actual operation of aero-engines and for optimizing their structure. It should be noted that this invention does not limit the specific structures of the rotor 200, support 300, and casing 400. Please refer to... Figures 1 to 4 As shown, in some embodiments, the rotor 200 includes a shaft 210, a compressor disk assembly 230, and a turbine disk 240. Both the compressor disk assembly 230 and the turbine disk 240 are connected to the shaft 210, which includes components along the axial direction (i.e.,...). Figures 1 to 4 The rotor experimental device comprises a first mounting section 211, a second mounting section 212, and a third mounting section 213 arranged sequentially in the front-to-back direction. The compressor disk assembly 230 is located between the first mounting section 211 and the second mounting section 212, and the rotating shaft 210 is located between the second mounting section 212 and the third mounting section 213. The rotor experimental device includes two casings 400 and three supports 300. The first mounting section 211, the second mounting section 212, and the third mounting section 213 are all rotatably connected to a support 300. One casing 400 is located between the support 300 connected to the first mounting section 211 and the support 300 connected to the second mounting section 212, and the other casing 400 is located between the support 300 connected to the second mounting section 212 and the support 300 connected to the third mounting section 213.

[0055] Those skilled in the art can adjust the structure and quantity of the support 300, rotor 200, and casing 400 based on the above embodiments to simulate the operation of aero engines with different structures. For example, the position of the support 300 can be adjusted based on the above embodiments, such as by placing the first mounting section 211 and the second mounting section 212 for rotatably connecting the support 300 between the compressor disk assembly 230 and the turbine disk 240. The quantity of the support 300 and casing 400, as well as the dimensions of the rotor 200, support 300, and casing 400, can also be adjusted based on the above embodiments. Adjustments based on the above embodiments also fall within the protection scope of this utility model.

[0056] The housing 400 of this invention is connected to the support 300 and has a receiving cavity 410 for accommodating a portion of the rotor 200. The housing 400 also has a first clearance hole 420, which connects the receiving cavity 410 to the outside. A first sensor 500 is connected to the bracket 100 and located radially to the rotor 200; the first sensor 500 can detect the radial displacement of the rotor 200 through the first clearance hole 420.

[0057] By providing a first clearance hole 420 on the housing 400, the first sensor 500 connected to the bracket 100 can detect the radial displacement of the rotor 200 relative to the bracket 100 during the experiment through the first clearance hole 420, thereby avoiding the mass of the first sensor 500 from affecting the dynamic characteristics of the structural system of the rotor 200, the support 300 and the housing 400, and improving the accuracy of the test results.

[0058] It should be noted that those skilled in the art can adjust the connection between the entire assembly consisting of the rotor 200, support 300, and housing 400 and the bracket 100. In some embodiments, the entire assembly consisting of the rotor 200, support 300, and housing 400 is separated from the bracket. In this case, during the experiment, the rotor 200, support 300, and housing 400 will not be affected by the bracket 100 and the first sensor 500, which can further improve the accuracy of the experimental results.

[0059] Please refer to Figure 1 As shown, in some embodiments, the support 300 is fixed to the bracket 100, which is mounted on an experimental platform with multiple degrees of freedom of motion. Through this design, the experimental platform can drive the first sensor 500, rotor 200, support 300, and casing 400 on the bracket 100 to move synchronously. The first sensor 500 can detect the radial movement of the rotor 200 when the experimental platform moves. Without departing from the inventive concept of this invention, those skilled in the art can reduce or even eliminate the influence of the bracket 100 on the experimental results through multiple experiments or by increasing the stiffness of the bracket 100.

[0060] This invention does not limit the method by which the first sensor 500 detects the radial displacement of the rotor 200 through the first clearance hole 420.

[0061] Please refer to Figure 10 As shown, in some embodiments, the first sensor 500 is a laser displacement sensor. The first sensor 500 is located on the outside of the housing 400. The first clearance hole 420 exposes part of the rotor 200 housed in the housing 400 to the outside. The probe facing the first clearance hole 420 can use laser to obtain the radial displacement of the rotor 200 during the experiment.

[0062] Please refer to Figure 6 , Figure 8 As shown, in some preferred embodiments, the bracket 100 includes a connecting shaft 110, which passes through a first clearance hole 420 into the receiving cavity 410. The first sensor 500 is disposed on one side of the connecting shaft 110, which is received in the receiving cavity 410. With this design, the first sensor 500 can extend into the receiving cavity 410 through the connecting shaft 110, reducing the distance between the first sensor 500 and the rotor 200. During the installation of the first sensor 500, researchers can more easily adjust its measurement position due to the reduced distance between the first sensor 500 and the rotor 200, which helps improve the testing accuracy of the first sensor 500 during the testing process and enhances the accuracy of the experimental results.

[0063] Without departing from the inventive concept of this utility model, those skilled in the art can choose the type of the first sensor 500. As a preferred embodiment, in some embodiments, the first sensor 500 is an eddy current displacement sensor. The eddy current displacement sensor, by measuring the distance between the eddy current probe and the rotor 200, has high measurement accuracy, which is beneficial to further improving the accuracy of experimental results.

[0064] Further, please refer to Figures 6 to 8 As shown, in some embodiments, the connecting shaft 110 has a transmission channel 111 that extends through the connecting shaft 110 along its extension direction. The transmission channel 111 is used to house electrical wires. Along the extension direction of the connecting shaft 110, a first sensor 500 is provided on the side of the transmission channel 111 closest to the rotor 200. Through this design, the electrical wires and the first sensor 500 housed in the transmission channel 111 are protected by the connecting shaft 110, preventing the wires from contacting the casing 400 or the rotor 200 during the experiment, thus increasing the stability of the experimental results.

[0065] Further, please refer to Figure 1 , Figure 2 , Figure 5 As shown, in some embodiments, the bracket 100 further includes a first frame 120 and a fastening assembly 130, with the connecting shaft 110 connected to the first frame 120 via the fastening assembly 130; the fastening assembly 130 has a locked state and an adjustable state; in the locked state, the fastening assembly 130 fixes the relative position of the connecting shaft 110 and the rotor 200; in the adjustable state, the fastening assembly 130 is movable relative to the connecting shaft 110 so that the connecting shaft 110 can move radially relative to the rotor 200.

[0066] After multiple experiments, the sensor's position may easily move away from or closer to the rotor 200, thus adversely affecting the accuracy of the measurement results. In the above embodiment, researchers can switch the fastening assembly 130 to the adjustment state before conducting the experiment, allowing the connecting shaft 110 to move radially relative to the rotor 200, thereby correcting the distance between the first sensor 500 and the rotor 200. After correcting the first sensor 500, the fastening assembly 130 is switched to the locked state, fixing the distance between the first sensor 500 and the rotor 200 before the experiment. This allows the first sensor 500 to accurately acquire the radial displacement of the rotor 200 under complex working conditions during the experiment, improving the accuracy of the experimental results.

[0067] Without departing from the inventive concept of this utility model, this utility model does not impose any restrictions on the specific structure for realizing the radial movement of the connecting shaft 110 relative to the rotor 200.

[0068] As a preferred method, please refer to Figure 6 , Figure 7 As shown, in some embodiments, the connecting shaft 110 extends radially along the rotor 200 and is movably connected to the first frame 120 radially along the rotor 200; the fastening assembly 130 includes a first fastener 131 and a second fastener 132, which are respectively disposed on different sides of the first frame 120 in the radial direction of the rotor 200 and are both threadedly connected to the connecting shaft 110. With this solution, the operator can switch the state of the fastening assembly 130 by rotating the first fastener 131 and the second fastener 132, thereby enabling the position of the first sensor 500 to be corrected.

[0069] Specifically, after the operator rotates the first fastener 131 or the second fastener 132 to bring the first fastener 131 and the second fastener 132 closer together and clamp the first frame 120, the fastening assembly 130 switches to the locked state. The connecting shaft 110 is fixed to the first frame 120 by the thread limit of the first fastener 131 and the second fastener 132. The distance between the first sensor 500 and the rotor 200 set on the connecting shaft 110 can also be fixed, so that the first sensor 500 can accurately obtain the radial displacement of the rotor 200 under experimental conditions during the experiment, thereby improving the accuracy of the experimental results.

[0070] After the operator rotates the first fastener 131 or the second fastener 132 to move them away from each other, the radial distance between the first fastener 131 and the second fastener 132 on the rotor 200 increases, thus no longer clamping the first frame 120. The fastening assembly 130 switches to the adjustment state, and the connecting shaft 110 can move radially along the rotor 200, driving the first sensor 500 to move radially along the rotor 200. The operator can adjust the radial distance between the first sensor 500 and the rotor 200.

[0071] On the other hand, the above embodiments can also adjust the position of the fastener on the connecting shaft 110 by rotating the fastener, thereby more accurately adjusting the radial distance between the first sensor 500 and the rotor 200.

[0072] As another preferred method, please refer to Figure 9 As shown, in some embodiments, the connecting shaft 110 is connected to the first frame 120 and is rotatable relative to the first frame 120 to move radially relative to the rotor 200; the fastening assembly 130 includes a third fastener 133, which is connected to the first frame 120 and located radially to the connecting shaft 110. The third fastener 133 is able to approach the connecting shaft 110 to restrict the radial movement of the connecting shaft 110 relative to the rotor 200. With this solution, the operator can move the third fastener 133 to switch the state of the fastening assembly 130, thereby enabling the position of the first sensor 500 to be corrected.

[0073] Specifically, when the operator moves the third fastener 133 away from the connecting shaft 110, the connecting shaft 110 can move radially along the rotor 200, causing the first sensor 500 to move radially along the rotor 200. The operator can then adjust the radial distance between the first sensor 500 and the rotor 200. After adjustment, the operator can directly move the third fastener 133 closer to the connecting shaft 110, causing the third fastener 133 to push the connecting shaft 110 into contact with the first frame 120 radially. The friction of the first frame 120 against the connecting shaft 110 restricts the radial movement of the connecting shaft 110, thus fixing the distance between the first sensor 500 and the rotor 200. This allows the first sensor 500 to accurately obtain the radial displacement of the rotor 200 under experimental conditions, improving the accuracy of the experimental results.

[0074] Without departing from the inventive concept of this utility model, those skilled in the art can adjust the position of the fastening component 130.

[0075] Please refer to Figure 8As shown, in some embodiments, the fastening assembly 130 includes a fourth fastener 134, which is threadedly connected to the side of the connecting shaft 110 near the rotor 200. The side of the connecting shaft 110 away from the rotor 200 is connected to the first frame 120. The first sensor 500 is connected to the side of the fourth fastener 134 near the rotor 200. Operators can rotate the fourth fastener 134 to switch the state of the fastening assembly 130, thereby adjusting the position of the first sensor and calibrating its position. In the above embodiments, the fastening assembly 130 is positioned near the rotor 200.

[0076] As a preferred option, please refer to Figure 6 , Figure 7 As shown, in some embodiments, the fastening assembly 130 is located on the side of the housing 400 away from the receiving cavity 410. Positioning the fastening assembly 130 on the side of the housing 400 away from the receiving cavity 410 allows researchers to directly adjust the fastening assembly 130 from the outside, thereby facilitating the adjustment of the position of the first sensor 500.

[0077] Further, please refer to Figure 4 , Figure 6 As shown, in some embodiments, the casing 400 also has a second clearance hole 430, which connects the receiving cavity 410 and the outside. The rotor experimental device also includes a second sensor 600, which is connected to the bracket 100 and located radially on the rotor 200. The second sensor 600 can also detect the radial displacement of the rotor 200 through the second clearance hole 430. The rotor experimental device has a projection plane perpendicular to the axial direction of the rotor 200. The line connecting the first sensor 500 and the axis of the rotor 200 has a first projection on the projection plane, and the line connecting the second sensor 600 and the axis of the rotor 200 has a second projection on the projection plane. The first and second projections intersect. Through the above scheme, the first sensor 500 and the second sensor 600 can respectively measure the displacement of the rotor 200 in different radial directions. Researchers can use the measurement results of the first sensor 500 and the second sensor 600 to determine the offset of the rotor 200 in a plane perpendicular to its own axial direction.

[0078] Further, please refer to Figures 1 to 4As shown, in some embodiments, the casing 400 also has a third clearance hole 440, which connects the receiving cavity 410 to the outside. The rotor experimental device also includes a third sensor 700, which is connected to the bracket 100 and located radially to the rotor 200. The third sensor 700 can also detect the radial displacement of the rotor 200 through the third clearance hole 440. The arrangement direction of the first sensor 500 and the third sensor 700 is parallel to the axial direction of the rotor 200. With the above scheme, the first sensor 500 and the second sensor 600 can respectively measure the displacement of different parts of the rotor 200 in the axial direction. Researchers can obtain the oscillation of the rotor 200 through the measurement results of the first sensor 500 and the third sensor 700.

[0079] Based on the above embodiments, those skilled in the art can further provide multiple clearance holes and sensors that detect radial displacement through the clearance holes to obtain radial displacement at different positions on the rotor 200.

[0080] As described above, those skilled in the art can adjust the structure of support 300 themselves. As a preferred embodiment, please refer to... Figure 11 As shown, in some embodiments, the support 300 includes a load-bearing frame 310, a bearing housing 320, and multiple load-bearing spokes 330. The rotor 200 is rotatably connected to the bearing housing 320. The multiple load-bearing spokes 330 are detachably connected to the bearing housing 320 and distributed circumferentially along the bearing housing 320. The side of each load-bearing spoke 330 away from the bearing housing 320 is detachably connected to the load-bearing frame 310. Through the above scheme, operators can change the number, position, and arrangement density of the load-bearing spokes 330 by disassembling and assembling them, thereby adjusting the connection strength between the bearing housing 320 and the load-bearing frame 310. This allows for adjustments to the overall stiffness of the support 300 and the dynamic characteristics of the entire structure consisting of the rotor 200, the support 300, and the casing 400, providing researchers with different experimental conditions.

[0081] In some embodiments, the load-bearing spoke 330 is connected to the load-bearing frame 310 and the bearing seat 320 by fastening bolts. In other embodiments, the load-bearing spoke 330 is connected to the load-bearing frame 310 and the bearing seat 320 by snap-fit ​​connections.

[0082] Further, please refer to Figure 12 As shown, in some embodiments, the rotor experimental apparatus further includes an oil supply line 800 for lubricating the bearing in the bearing housing 320. Through this design, the oil supply line 800 can reduce bearing friction through lubrication, thereby reducing heat generation in the experimental apparatus and improving the overall stability of the rotor experimental apparatus.

[0083] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A rotor test device, characterized by, The rotor experiment device comprises: a support; a rotor; a bearing, to which the rotor is rotationally connected; a casing, connected to the bearing, and having a receiving cavity and a first avoiding hole, the rotor being partially received in the receiving cavity, and the first avoiding hole connecting the receiving cavity with the outside; a first sensor, connected to the support and located in the radial direction of the rotor, and capable of detecting the radial displacement of the rotor through the first avoiding hole.

2. The rotor experiment apparatus according to claim 1, wherein The support comprises a connecting shaft, which penetrates into the receiving cavity through the first avoiding hole, and the first sensor is arranged on the side of the connecting shaft received in the receiving cavity.

3. The rotor experiment apparatus according to claim 2, characterized by The support further comprises a first frame body and a fastening assembly, and the connecting shaft is connected to the first frame body through the fastening assembly. The fastening assembly has a locking state and an adjusting state. In the locking state, the fastening assembly fixes the relative position of the connecting shaft and the rotor. In the adjusting state, the fastening assembly is movable relative to the first frame body, so that the connecting shaft is movable in the radial direction relative to the rotor.

4. The rotor experiment apparatus according to claim 3, wherein The connecting shaft extends in the radial direction of the rotor, and the connecting shaft is movably connected to the first frame body in the radial direction of the rotor; the fastening assembly comprises a first fastener and a second fastener, which are arranged on different sides of the first frame body in the radial direction of the rotor and are both threadedly connected to the connecting shaft.

5. The rotor experiment apparatus according to claim 3, wherein The connecting shaft is connected to the first frame body and is rotatable relative to the first frame body to move in the radial direction relative to the rotor; the fastening assembly comprises a third fastener, which is connected to the first frame body and located in the radial direction of the connecting shaft, and the third fastener is capable of approaching the connecting shaft to limit the movement of the connecting shaft in the radial direction relative to the rotor.

6. The rotor experiment apparatus according to claim 3, wherein The fastening assembly is arranged on the side of the casing away from the receiving cavity.

7. The rotor experiment apparatus according to claim 2, wherein The connecting shaft has a transmission channel, which penetrates through the connecting shaft in the extension direction of the connecting shaft, and the transmission channel is used for arranging an electric wire; in the extension direction of the connecting shaft, the side of the transmission channel close to the rotor is provided with the first sensor.

8. The rotor experiment apparatus according to claim 1, wherein The casing further has a second avoiding hole, which connects the receiving cavity with the outside; the rotor experiment device further comprises a second sensor, which is connected to the support and located in the radial direction of the rotor, and is also capable of detecting the radial displacement of the rotor through the second avoiding hole; the rotor experiment device has a projection plane perpendicular to the axial direction of the rotor, the line between the first sensor and the axis of the rotor has a first projection on the projection plane, the line between the second sensor and the axis of the rotor has a second projection on the projection plane, and the first projection and the second projection intersect.

9. The rotor experiment apparatus according to claim 1 or 8, characterized by The machine case further has a third avoiding hole, which is communicated with the accommodating cavity and the outside; the rotor experiment device further comprises a third sensor, which is connected to the support and located at the radial direction of the rotor, and can detect the radial displacement of the rotor through the third avoiding hole; the arrangement direction of the first sensor and the third sensor is parallel to the axial direction of the rotor.

10. The rotor experiment apparatus according to claim 1, wherein The support comprises a bearing frame, a bearing seat and a plurality of bearing webs, the rotor is rotationally connected to the bearing seat, the plurality of bearing webs are detachably connected to the bearing seat and distributed along the circumferential direction of the bearing seat, and the side of the plurality of bearing webs away from the bearing seat is detachably connected to the bearing frame.

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